Which type of boundary is NOT used to delineate neighborhoods?

The correct choice indicates that historical boundaries are not typically used to delineate neighborhoods. Neighborhoods are often defined by more tangible and practical factors. Natural boundaries, such as rivers or mountains, can create clear, physical separations in the landscape, making them useful for defining neighborhood limits. Political boundaries refer to lines established by governmental entities, such as city or county lines, which often dictate the administrative divisions of neighborhoods. Man-made boundaries include features like roads or railroads that can be utilized to distinguish one area from another.

In contrast, historical boundaries may not provide a clear or relevant framework for contemporary neighborhood delineation. They can be based on past events or patterns that no longer have significance in today's urban layout or community identity. As such, while they might hold cultural or nostalgic value, they lack the specificity and practicality needed for current neighborhood definitions.